A neutral state colorless phosphazene/carbazole hybride dendron and its electrochromic device application

作者：Sezgin Meryem; Ozay Ozgur; Koyuncu Sermet; Ozay Hava^*; Koyuncu Fatma Baycan

来源：Chemical Engineering Journal, 2015, 274: 282-289.

DOI：10.1016/j.cej.2015.03.134

• Electrochromic device
• Phosphazene
• Carbazole
• Dendron

In this work, a new phosphazene/carbazole hybride dendron (PC) was synthesized and then directly coated onto ITO glass surface to provide a dendritic polymer network, poly-(PC), by using potentiodynamic electrochemical process. Structure of dendron was identified by FT-IR, H-1 and P-31 NMR, and also TOF-MS analyses. The optical and electrochemical properties of PC and its electrochemical crosslinked product were investigated by using UV-vis absorption, fluorescence and CV techniques. A neutral, colorless electrochromic device was constructed in the sandwich configuration [indium tin oxide (ITO)coated glass/anodically coloring material (poly-(PC))//gel electrolyte//cathodically coloring material (PEDOT)/ITO-coated glass] and revealed a short response time (about 0.5 s), high coloration efficiency (981 cm(2) C-1) and high redox stability.

• 出版日期2015-8-15